JPS6031885A - Square-shaped packing material for water treatment and apparatus for preparing the same - Google Patents

Abstract

PURPOSE:To prepare a large amount of square-shaped packing materials useful for filthy water treatment, by turning-in or rolling-in a net body or a meshed pipe made of a synthetic resin so as to reduce the width thereof to several percents to lap the same into a flat state, and welding the lapped part at one place or more. CONSTITUTION:The long net body 4 or a mesh pipe 2 withdrawn from a winding frame 11 is inserted through a guide member 12 and turned in or rolled in to reduce the width thereof to several percents while the processed one is rolled in between upper and lower feed rollers 17, 17 to start the operation of a motor 18. The high temp. heating parts of the net body 4 or the mesh pipe 2 are clamped and welded by welding productions 20 while the temp. of each welded part 3 is absorbed by each projection 20 and rapidly cooled and solidified to integrate the lapped net body 4 or mesh pipe 2. The integrated long net body 4 or the mesh pipe 2 are cut by the up-and -down movable shear cutting blade 22 and the fixed cutting blade 21 of a cutter 15 to form a square-shaped packing material 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a square packing for water treatment, which is mainly used as a contact medium for aerobic or anaerobic contact treatment of wastewater;
The present invention relates to an apparatus for manufacturing this filling.

In a sewage treatment tank in which sewage is subjected to aerobic or anaerobic contact treatment, the conditions under which a filler is necessary as a contact medium are as follows.

■ Biologically, it is desirable to have a maximum food chain in a limited water area, with protozoa, multicellular small animals, arthropods, molluscs, small fish, etc. Coexistence with phytoplankton and various floating plants on land.
At the same time, a high degree of purification (denitrification, dephosphorization treatment) of the water to be treated can be expected through the mizuhiki cultivation of weeds, useful vegetables, etc.

■ The requirements for users are that the water treatment performance is excellent and always stable, and the equipment can be made small and inexpensive.

■ Similarly, the filling material is light and easy to handle, and can be used in aquariums of any shape and depth, without requiring any construction work, simply by adding it to the aquarium.

■ Similarly, the filling material must be chemically stable and can be used permanently in water.

■ Appearances that are physically and geometrically similar to water have a specific gravity, do not sink or float too much, do not become entangled with each other and become one, and maintain a dispersed floating state in the water.

■ No obstruction of water flow (blockage) in the filling due to the death of living things or accumulation of living things, no trapping of air bubbles, and no rising horizontally and rendering the filling ineffective. Even if this state occurs due to overload, it can be easily recovered.

In order to find a filling that satisfies the above conditions, the present inventor manufactured various fillings and conducted repeated research and experiments.
This has already been proposed in No. 23674, Japanese Unexamined Patent Publication No. 54-103253, Japanese Utility Model Publication No. 31358/1983, etc.

The above-mentioned filling is a combination of multiple mesh tubes that are continuously extruded using hard polyethylene resin as a base material, and is optimal in that it can satisfy each of the above conditions. Due to the combination structure of mesh tubes, there are large differences in the unit volume price, material cost, and productivity, and this is a major issue that affects the practical application of the mesh tubes.

This invention was made in view of the above-mentioned points, and provides a rectangular packing whose unit volume price is low and which satisfies the conditions necessary for sewage treatment, and which makes it possible to mass-produce this filling. The purpose is to provide a manufacturing method that can be used.

A first configuration of the present invention is to fold or roll up synthetic resin nets or mesh tubes so that the width thereof is reduced to a few minutes, and overlap them in a flat state. It is a welded square filling, and the second condition of this condition is
The structure is such that the mesh body or mesh tube pulled out from the reel is folded or rolled up with a guide member to reduce its width to a fraction of a second.
The wires are pressed flat in an overlapping state by a feed roller and sent intermittently, and in front of the feed roller, the wires of the mesh body or mesh tube are heated by a heating mechanism, and the welding protrusions provided on the feed roller are used to weld the mesh. The overlapping parts of the body or mesh tube are welded at regular intervals, and after welding, the mesh or mesh tube is cut into rectangular shapes using a cutting machine.

Hereinafter, the present invention will be explained based on embodiments shown in the accompanying drawings.

FIGS. 1 to 5 show different examples of the square packing 1 according to the present invention, the basic structure of which is to fold or roll a mesh or a mesh tube and reduce the width to a few minutes to make it flat. It is constructed by overlapping the two parts and welding at least one part of the overlapping part.

In the first example shown in Figs. 1 and 2, a hard polyethylene mesh tube 2 made of thin strands is cut into a length of about 50 mm, and then folded into a flattened rear part under pressure. The parts are overlapped to reduce the width to - of the parts, and a heat welded part 3 is applied at the center of the overlapped part to maintain the shape.

In the second example shown in FIG. 3, the same mesh pipe 2 as above is flattened, both sides are folded back to the - side so that the side edges abut each other, and the width is reduced to - of the part. 4- A heat welded part 3 is applied to the abutting edge of the fold.

In the third example shown in Fig. 4, the mesh tube 2 is flattened, both sides are folded back to opposite sides, and the width is reduced to three layers by folding the mesh tube 2 to opposite sides, and the width is reduced to three layers, and a heat-welded portion is applied to this overlapped portion. This is how it was done.

Note that the number of folds of the mesh tube is not limited to the illustrated example; for example, after the mesh tube is flattened, it is folded in four layers so as to be rolled inward one after another, and the entire overlapped portion is heat-welded. You can do it like this.

Moreover, as the above-mentioned mesh pipe 2, for example,
Using the manufacturing method shown in No. 185, hard polyethylene resin (specific gravity 0.95 to 0.97) is continuously extruded, and the diameter is 20 to QOmm, the mesh spacing is 2 to 8 mm, and the wire diameter is 0.
．． It is preferable to use one formed to a thickness of 1 to 0.8 mm.

In the fourth example shown in FIG. 5, relatively wide net members 4 are rolled up and overlapped in a flat state, and a required number of heat-welded portions are applied to the overlapping portions.

The mesh body 4 used in this fourth example has the same mesh spacing and strand diameter as the mesh tube 2, and the number of overlaps by winding can be freely selected.

Next, FIGS. 6 and 7 show an apparatus for manufacturing the rectangular packing 1, in which a long mesh body 4 or a long mesh tube 2 is wound around a winding frame 11 and a winding frame 11 is pulled out from the winding frame 11. A guide member 12 that guides the mesh body 4 or the mesh tube 2 to move in the longitudinal direction and folds or rolls up the mesh body 4 or the mesh tube 2 passing through it to reduce its width to a few minutes. A heating mechanism 13 disposed in front of the mesh body 4 of the member 12 or the mesh tube 2 in the moving direction; an intermittent feeding mechanism 14 disposed in front of the heating mechanism 13; and a cutting machine disposed further in front of the feeding mechanism 14. It consists of 15.

The guide member 12 is provided with a fold-in or roll-in guiding portion so that the mesh body or mesh tube 2 passing therethrough has the cross-sectional shape of the rectangular packing 1 illustrated in FIGS. 1 to 5.

The heating mechanism 13 has nozzles 16 and 16 disposed above and below the folded or rolled-up mesh body 4 or mesh tube 2 coming out of the guide member 12, and uses high-temperature air ejected from the nozzles 16 and 16 to heat the mesh. The body 4 or the wires of the mesh tube 2 are heated to a temperature at which they can be welded.

The intermittent feed mechanism 14 is formed by a pair of feed rollers 17 and 17 arranged above and below, sandwiching the elongated mesh body 4 or the mesh tube 2 in a folded or rolled-up state, and flattens the mesh body 4 or the mesh tube 2. At the same time, the mesh body or mesh tube 2 is intermittently rotated by being driven by an intermittent drive mechanism 19 equipped with a motor 18, and the long mesh body or mesh tube 2 is intermittently sent forward a fixed length.

The feed rollers 17 and 17 are not shown in detail, but are given elasticity by gravity and springs as they approach each other, and their width is approximately equal to the flat width of the mesh body 4 or the mesh pipe 2.
Alternatively, in order to increase the tensile force of the mesh tube 2, the entire outer peripheral surface is formed into a gear-like uneven surface.

Further, on the outer periphery of the feed rollers 17, 17, there are welding protrusions 20 at regular intervals in the circumferential direction, which apply pressure to weld the heated elongated mesh body 4 and the wires of the mesh tube 2. It is provided.

In the case shown, the W1 attachment protrusion 20 of the feed rows 517, 17
are provided at positions dividing the circumferential direction into six equal parts, the intermittent rotation angle is equal to the interval of the welding protrusions 20, and the stopping position is I.
The intermittent drive mechanism 1 is arranged so that the II projections 20 correspond to the upper and lower sides.
9.

The cutting machine 15 includes fixed cutting blades 21 that sandwich the flat elongated net 4 or mesh tube 2 from above and below, a shear cutting blade 22, and a crank that imparts vertical movement to the shear cutting blade 22 via a connecting rod 23. 24, the crank 24 is driven by the rotating shaft 25 of the intermittent drive mechanism 19, and the crank 24 is driven by the rotating shaft 25 of the intermittent drive mechanism 19, and the mesh or mesh! When the movement of the mesh pipe 2 is stopped, the shear cutting blade 22 is moved up and down, and the long mesh body 4 or the mesh pipe 2 is cut into short rectangular shapes with the fixed blade 21.

Note that the spacing between the heating mechanism 13 and the intermittent feed mechanism 14 is set to an integral multiple of the distance between the circumferences of the welding protrusions 200 provided on the feed row 517.17. The position of is the long mesh body 4 or the mesh pipe 2.
The shear cutting blade 22 and the fixed cutting blade 21 are set to cut the position between the welded parts 3 formed in the .

The manufacturing apparatus of the present invention has the above-mentioned configuration, and the winding frame 1
The long mesh body 4 or mesh tube 2 pulled out from 1 is inserted into the guide member, folded or rolled up to reduce its width to a few minutes, and then rolled between the upper and lower feed rollers 17, 17, and then moved to the motor 18. Activate.

The upper and lower feed rollers 17, 17 are intermittently rotated by a distance equal to the pitch of the welding protrusions 20 by an intermittent drive mechanism 19 formed by incorporating a cam, Geneva, etc. Only the distance will be sent intermittently.

The heating mechanism 13 heats the wires of the mesh body 4 or the mesh tube 2 moving toward the feed rollers 17, 17 by blowing high-temperature air thereon.

When the long mesh body 4 or the mesh tube 2 passes through the guide member 12, it becomes a folded or rolled-up shape with a predetermined cross-sectional shape and moves to the heating mechanism 13, and since it moves intermittently, when it stops, the nozzle The position facing 16.16 is heated to a particularly high temperature, and this high temperature heated portion is the position that is pressed by the welding protrusion 20 of the feed roller 17.17 after several intermittent movements, so the feed rollers 17, 17 Every time it stops, the high temperature heating part of the mesh body 4 or the mesh pipe 2 is heated by the welding protrusion 20.
The welded parts 3 are sandwiched and welded, and the heat marks are removed by the projections 20 in the welded parts 3, and the welded parts 3 are quickly cooled and solidified to integrate the overlapping mesh bodies 4 or mesh tubes 2.

The long mesh body 4 or mesh tube 2 integrated at the welding part 3 in this way is sent to the cutting machine 15, and the long mesh body 4 or the mesh pipe is cut by the vertically moving shear cutting blade 22 and the fixed cutting blade 21. The tube 2 is sequentially cut to form a rectangular packing 1 as shown in FIGS. 1 to 5.

By selecting the position of the cutter 15, it is possible to position the welded portions 3 of the filling material 1 not only at one point in the center but also at half of each of the cut ends.

As described above, according to the present invention, since it has the above-mentioned configuration, it has the following effects.

A mesh body or mesh tube formed using synthetic resin is folded or rolled up, its width is reduced to a fraction of a second, and the overlapping parts are welded at least in one place while flatly stacking them. , it is possible to solve the problems that arise with fillings made by simply cutting mesh pipes into short lengths.

In other words, if a mesh pipe is used alone, it remains cylindrical even during use, so it is bulky and the capacity of the tank to hold the filling material is very low.Moreover, the cut ends become intertwined, making it difficult to move underwater, making it difficult for water treatment. Although there is a problem of deterioration of performance, since the rectangular packing of this invention is made by folding or rolling the mesh body or mesh tube and stacking them in a flat state, the cut ends are in a state where the ends of the strands are closely overlapped. , the wires on both sides do not get entangled like untangled parts and slide easily, allowing good movement in the water and greatly improving water treatment performance, while at the same time reducing the overall shape. It is also possible to increase the amount of water filled into the tank.

■ Synthetic resin nets or mesh tubes are folded or rolled up, stacked flat, and the overlapping parts are welded, so even if a mesh or mesh tube with a coarse mesh and a small wire diameter is used, the strands can be easily This overlap makes it possible to secure the minimum amount of resin necessary for welding at the welding part, and it is possible to securely bond the welded area even with mesh bodies and mesh pipes under the conditions described above, where it is difficult to bond with adhesives such as polyethylene resin. A filling with welding strength can be formed.

■Although the filling is made up of a large amount of mesh and edge mesh tubes that are folded or rolled up, the mesh is rough and flat, so the interior will not become clogged with the remains of dead organisms like a sponge. It is a perfect habitat for various small organisms, and biological treatment of wastewater can be carried out effectively.

■ Since the filler is formed flat, due to the relationship between the center of gravity and the center of buoyancy, it is inevitably positioned in the aquarium so that the flatness is kept horizontal, and the amount of filler that can be accommodated in the aquarium is relatively small. This increases the processing performance in limited water areas.

■ Since the filling is formed by folding or rolling a mesh body or mesh tube, it bulges even in a flat state and does not stick to each other, making it possible to secure attachment areas for small organisms around and inside the filling. Even during use, it is licked and compressed in a floating state and adheres closely, so that there is no risk of small organisms attaching to it.

■ After folding or rolling a long net or mesh tube into a flat state and heating it, the heated part is welded using the welding protrusion provided on the feed roller of the intermittent feed mechanism, and the welded net or mesh tube is Since the material is cut into short rectangular pieces using a cutting machine, it is possible to mass-produce the rectangular filling material using the mesh body or the mesh tube in a fully automatic manner, and it is possible to provide the filling material at low cost.

vI Since the long mesh body or mesh tube is moved intermittently to perform heating and welding, sufficient heating is applied to the necessary heating portions of the mesh body or mesh tube in a timely manner,
Since the areas other than those required for welding are moved and heated, there is no need to excessively heat the mesh wires, and a filling with excellent welding strength can be produced.

- Since the filling material can be manufactured using one continuous long mesh body or mesh tube, the device can be made smaller and simpler.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a first example of a rectangular packing according to the present invention, FIG. 2 is a longitudinal cross-sectional view of the same, FIG. 3 is a perspective view showing a second example of the same, and FIG. Vertical sectional view showing the third example, fifth
The figure is a longitudinal cross-sectional view showing the fourth example, FIG. 6 is a front view of the apparatus for manufacturing a square filling, and FIG. 7 is a plan view of the same. 1... Square filling 2... Mesh tube 3... Welded part 4... Net body 11... Winding frame 12.
... Guide member 13 ... Heating mechanism 14 ... Intermittent feed mechanism 15 ... Cutting machine 16 ... Nozzle 17 ...
Feed roller 20...welding protrusion 15-AI"1

Claims (1)

[Claims] (1) Net bodies or mesh tubes formed using synthetic resin are folded or rolled up so that the width is reduced to a fraction of a second, overlapped in a flat state, and at least one part of the overlapped part is welded. A square filling for water treatment characterized by: ('2I) A guide member that folds or rolls up the mesh body or mesh tube that is pulled out from the winding frame and passes through it, and reduces its width to a fraction of a second, and the mesh body or mesh tube that has passed through the guide member is overlapped. an intermittent feeding mechanism that pressurizes the wire flatly and intermittently feeds it in the longitudinal direction; a heating mechanism that is located behind the intermittent feeding mechanism in the feeding direction and heats the strands of the mesh body or mesh tube that it passes through; and the intermittent feeding mechanism. It is located at the front in the feeding direction and consists of a cutting machine that cuts the overlapping nets or mesh tubes to a predetermined length, and pressurizes and welds the heated parts of the overlapping nets or mesh tubes to the intermittent feeding mechanism. A manufacturing device for a water treatment square packing, characterized in that it is provided with a protrusion for water treatment.